I am installing a TBI system on my '75 FJ (Chevy 327). I need to add a return fuel line. The stock fuel tank has a line/hose that come out on the driver's side of the tank and is current "closed" via a bolt and hose clamp. That was the condition it was in when I bought it and I have assumed that it is an alternative fuel suction hose. Has anyone used that hose as a return line for a TBI system? Thanks. t